EC2/EBS Conditional Failure Patterns (Part 3)
Data strictly extracted from official AWS troubleshooting documentation. Click the symptom below to get the targeted conditional failure pattern and its consequence.
🚨 Step 1: What specific error symptom are you experiencing?
Please click the most accurate description:
Quick Reference Table
| # | Pattern | Verbatim Conditional Sentence | Trigger Condition | Consequence |
|---|---|---|---|---|
| 1 | If... fails silently | "If you attempt to copy an encrypted snapshot without having permissions to use the encryption key, the operation fails silently." | Attempting to copy an encrypted Amazon EBS snapshot without having the necessary AWS KMS key permissions. | The snapshot copy operation fails. (Silent) |
| 2 | If... cannot | "If you plan to use an SSH client on a macOS or Linux computer to connect to your Linux instance, use the following command to set the permissions of your private key file so that only you can read it... If you do not set these permissions, then you cannot connect to your instance using this key pair." | Failing to set read-only permissions (chmod 400) on the private key .pem file when connecting from macOS/Linux. | Cannot connect to the Amazon EC2 Linux instance via SSH. (Visible) |
| 3 | If... unsuccessful | "When the boot mode parameter is set to uefi, EC2 attempts to launch the instance on UEFI. If the operating system is not configured to support UEFI, the instance launch will be unsuccessful." | Setting the Amazon EC2 AMI boot mode parameter to uefi when the underlying operating system is not configured to support UEFI. | The EC2 instance launch fails. (Visible) |
| 4 | If... will break | "If you enforce the use of IMDSv2, applications or agents that use IMDSv1 for instance metadata access will break. If you turn off all access to instance metadata, applications or agents that rely on instance metadata access to function will break." | Enforcing the use of IMDSv2 (Instance Metadata Service Version 2) or turning off all instance metadata access on an EC2 instance. | Applications or agents relying on IMDSv1 or general instance metadata access will break. (Visible) |